Home Inspection Checklist: What to Look For Before You Buy

Why a Home Inspection Is One of the Best $400 You'll Ever Spend

You've found the house. You love the kitchen, the backyard is perfect, and the neighborhood checks every box. But before you sign anything, there's one step you absolutely cannot skip: the home inspection.

A home inspection is a thorough, professional evaluation of a property's condition — from the foundation up through the roof. It typically costs between $300 and $500 depending on the home's size and location, and it takes two to four hours to complete. What it can save you? Potentially tens of thousands of dollars in surprise repairs, or the heartbreak of buying into a money pit.

This guide gives you a complete home inspection checklist for buyers — what a licensed inspector evaluates, what problems signal real danger, and how to use the inspection report to negotiate or decide whether to walk.

One important note before we dive in: a home inspection is not a pass/fail test. Nearly every house has something. The goal isn't a perfect report — it's an honest one. What you're looking for is the difference between normal wear and tear and structural problems that could cost you serious money down the road.

What a Home Inspector Actually Checks

A licensed home inspector follows standards set by organizations like the American Society of Home Inspectors (ASHI), which requires inspectors to evaluate all visible and accessible systems and components of a home. Here's a breakdown of what's typically covered.

Structural Components

The inspector will examine the foundation, framing, floors, walls, ceilings, and roof structure. These are the bones of the house, and problems here tend to be expensive and non-negotiable.

• Foundation type (slab, crawl space, basement) and visible cracks or movement
• Floor joists and structural beams for damage, sagging, or improper modifications
• Wall framing visible from attic or basement
• Attic framing, ventilation, and insulation condition

Roof

The inspector will walk the roof when safe to do so, or inspect it from the ground with binoculars or a drone. Roof issues are among the most common findings — and among the most negotiable.

• Shingle condition: cracking, curling, missing, or granule loss
• Flashing around chimneys, skylights, and vents
• Gutters and downspouts
• Visible signs of sagging or uneven surfaces
• Soffit and fascia condition

Exterior

• Siding and trim for damage, rot, or gaps
• Grading and drainage (does water flow away from the house?)
• Driveways, walkways, and retaining walls
• Decks, porches, and attached structures
• Windows and exterior doors for proper sealing and operation

Plumbing

The inspector will run water at every fixture, check water pressure, inspect visible pipes, and look under sinks for leaks or water damage.

• Water heater age, condition, and proper venting
• Supply line materials (copper, CPVC, PEX, or galvanized — which can be a problem)
• Drain lines and visible drain pipe materials
• Toilets, sinks, showers, and bathtubs
• Sump pump operation (if applicable)
• Exterior hose bibs and main shutoff valve location

Electrical

Electrical issues are the second leading cause of house fires, so this section gets careful attention.

• Main service panel: amperage, breaker condition, labeling
• Presence of double-tapped breakers or improperly rated breakers
• Visible wiring type (modern Romex, aluminum wiring, or older knob-and-tube)
• GFCI outlets in kitchens, bathrooms, and exterior locations
• AFCI breakers in required locations
• Smoke and carbon monoxide detector presence
• Grounding and bonding of electrical system

HVAC (Heating, Ventilation, and Air Conditioning)

• Furnace and AC unit age and condition
• Filter condition and accessible ductwork
• Thermostat operation
• Heat exchanger for cracks (a cracked heat exchanger can leak carbon monoxide)
• Flue pipes and venting for proper installation
• Adequate heating and cooling in all rooms

Interior

• Walls and ceilings for cracks, stains, or bulging
• Floors for unevenness, soft spots, or damage
• Doors and windows — do they open, close, and lock properly?
• Staircase railings and handrails
• Garage door operation and safety reversal
• Fireplace and chimney condition (if present)

Insulation and Ventilation

• Attic insulation depth and type
• Vapor barriers in crawl spaces
• Exhaust fans venting to exterior (not into attic)
• Signs of condensation or moisture in attic or crawl space

The Home Inspection Checklist: Room by Room

Use this checklist during or after your inspection walkthrough. You're allowed — and encouraged — to attend the inspection. Follow the inspector around, ask questions, and take notes. It's one of the best investments of four hours you'll ever make as a buyer.

Kitchen

• Run the garbage disposal and all faucets — check for leaks under the sink
• Test every burner on the stove and the oven
• Check the range hood for proper venting
• Open cabinets under the sink — look for staining, soft spots, or evidence of past leaks
• Look at the ceiling and walls for water stains if there's a bathroom above
• Check dishwasher for proper installation and drain line setup

Bathrooms

• Flush toilets and watch for rocking, slow drains, or running
• Check caulking and grout around tub and shower — missing caulk can allow water intrusion
• Press on tile walls around the tub for soft spots (indicates water damage behind)
• Test exhaust fan — is it actually venting to the exterior?
• Check for GFCI outlets near all water sources
• Look under vanity for signs of past or active leaks

Bedrooms and Living Areas

• Test all windows — do they open, stay open, lock, and seal properly?
• Check for cracks in walls or ceilings, especially diagonal cracks near corners of windows and doors (can indicate foundation settlement)
• Look at floors for soft spots, squeaks, or unlevel surfaces
• Verify outlets work (the inspector will use a tester)
• Check closet ceilings for water stains if exterior walls are involved

Basement and Crawl Space

• Look for water staining along the walls or floor (tide marks indicate past flooding)
• Check for efflorescence (white mineral deposits) on concrete walls — a sign of water infiltration
• Inspect visible wood framing for rot, damage, or insect activity
• Look for proper vapor barrier in crawl spaces
• Verify sump pump is functional and has a battery backup
• Note any exposed insulation, missing insulation, or evidence of pests

Attic

• Adequate ventilation — proper ratio of intake and exhaust vents
• No signs of active or past roof leaks (staining on decking or rafters)
• Insulation depth and even coverage
• No bathroom or kitchen exhaust fans venting into the attic
• No signs of pest activity (droppings, nests, chewed wood or wiring)

Garage

• Garage door auto-reversal: place a block of wood in the path and see if it reverses
• Fire-rated door to living space (should be solid-core and self-closing)
• Check drywall for damage — garages are common entry points for pests
• GFCI outlets on exterior walls
• Check the garage floor for cracks, staining, or significant settling

Red Flags vs. Minor Issues: How to Read the Report

A home inspection report can run 40 to 80 pages. Not everything in it is a crisis. Knowing the difference between a red flag and a routine maintenance item is what separates buyers who panic at nothing from buyers who catch real problems.

The rule of thumb: Issues that affect safety, structure, or water intrusion deserve serious attention and potentially professional second opinions before closing. Everything else is a negotiating chip or a to-do list for year one.

When to Walk Away — and When to Negotiate

One of the hardest calls in a home purchase is deciding whether a bad inspection report is a dealbreaker or an opportunity. Here's how to think through it.

Situations Where Walking Away Makes Sense

The seller won't negotiate after a serious finding. If the inspection reveals a $15,000 foundation repair and the seller refuses to budge on price or offer a credit, the math often doesn't work — especially if you're already at the top of your budget. Speaking of which, make sure you know your actual numbers with a mortgage calculator before you're deep in negotiations.

Multiple major systems need replacement simultaneously. One aging HVAC unit is manageable. But when the roof has two years left, the electrical panel needs upgrading, the water heater is 14 years old, and there are signs of past water intrusion — you're looking at a house that could need $40,000 or more in the first few years. That math needs to be part of your offer calculus from the start.

Evidence of undisclosed problems. Fresh paint over water stains. New caulk around a window in an otherwise untouched house. A basement that smells heavily of deodorizer. These can signal a seller trying to hide rather than disclose known issues. Trust your inspector's read on the situation.

Structural issues requiring an engineer's report. When the home inspector recommends a structural engineer evaluation, take it seriously. If the engineer's report reveals significant foundation failure or compromised structural framing, the repair costs can be staggering — and in some cases, the house may not be safely repairable at a reasonable cost.

Situations Where You Negotiate

Roof at end of life. Ask for a seller credit equal to a fair portion of replacement cost, or request the seller replace it before closing. A new roof runs $8,000–$15,000 for a typical home.

Older but functional HVAC. Request a home warranty that covers the system, or negotiate a price reduction. A full replacement runs $5,000–$12,000.

Deferred maintenance items that add up. Small things ($200 here, $500 there) can add up to real money. It's entirely reasonable to ask for a credit covering a portion of these costs, or to request the most significant items be repaired before closing.

A Note on Inspection Contingencies

Always make sure your purchase contract includes an inspection contingency. This gives you the legal right to back out of the deal — and get your earnest money back — if the inspection reveals problems you can't accept. In hot markets, some buyers waive this contingency to make their offer more competitive. That's a significant risk. If you take it, go in with eyes open.

Understanding the full picture of what you're spending matters here too. Don't forget that closing costs typically add another 2–5% to your purchase price on top of your down payment — that's money you'll want to have accounted for before committing to a house that also needs $20,000 in repairs.

Specialty Inspections Your General Inspector Won't Cover

A standard home inspection is visual and non-invasive — the inspector won't cut into walls, test for every contaminant, or evaluate things outside their scope. Depending on the property, you may want additional specialty inspections.

• Radon testing: Radon is a colorless, odorless gas that's the second leading cause of lung cancer in the U.S. Testing is inexpensive ($10–$30 DIY, or included by many inspectors). If levels are above 4 pCi/L, mitigation is needed — typically $800–$2,500.
• Sewer scope inspection: A camera snaked through the main sewer line can reveal root intrusion, pipe collapse, or bellied pipes. Essential for homes over 20–30 years old. Costs $100–$300.
• Mold inspection: If you see visible mold, smell mustiness, or the inspector flags moisture concerns, a mold inspection and testing may be warranted. Remediation costs vary widely but can be significant.
• Chimney inspection: A Level 2 chimney inspection (required before purchase per NFPA 211) evaluates the firebox, flue liner, and exterior. Run this if there's a wood-burning fireplace or stove.
• Pest/termite inspection: Many lenders require this in certain regions. Termite damage can be extensive and isn't always visible. This is typically $75–$150.
• Lead paint and asbestos: Relevant for homes built before 1978 (lead) and before 1980 (asbestos). Disturbing these materials during renovation without proper handling is both dangerous and expensive.
• Well and septic inspection: If the home has a private well or septic system, these require separate evaluation. Budget $300–$600 for each.

How to Use the Inspection Report After You Get It

The inspection report will arrive within 24–48 hours as a detailed PDF. Here's how to work through it effectively.

Read the whole thing, but prioritize the summary. Most inspectors include a summary section at the front or back that calls out the most significant findings. Start there, then dive into detail on anything flagged as a major concern.

Get contractor estimates before requesting credits. Don't guess at repair costs. For any significant finding, call a licensed contractor for an estimate before you go back to the seller. Coming in with a $15,000 repair estimate from a real contractor is far more persuasive than a number you pulled from a Google search.

Separate what you'll ask for from what you'll just do yourself. Leaky outdoor faucet? You'll handle it. Failed heat exchanger in the furnace? That's a negotiating point.

Don't ask for everything. Sending the seller a list of 47 repair requests after a routine inspection is a good way to poison goodwill and stall a deal. Focus on the items that matter — safety issues, major systems, and structural concerns.

Think long-term, not just closing. The goal isn't to squeeze every dollar out of the seller at closing. It's to buy a house you understand, at a price that accounts for its actual condition. If the numbers work after accounting for the inspection findings, proceed with confidence. If they don't, that's valuable information too.

Owning a home is one of the biggest financial decisions most people make — and it sits at the intersection of several important money decisions. Once you're in, it's worth reading up on when it makes sense to refinance, and thinking through how homeownership fits into your broader financial order of operations.

Quick Reference: Home Inspection Checklist for Buyers

Print this or save it to your phone before your inspection day.

• ✅ Attend the inspection — don't skip it
• ✅ Bring a notepad and take photos of anything the inspector flags
• ✅ Ask the inspector: "What are the most important issues here?"
• ✅ Test every light switch, outlet, window, and door
• ✅ Run every faucet and flush every toilet
• ✅ Check under every sink for signs of past leaks
• ✅ Ask about the age of the roof, HVAC, and water heater
• ✅ Look at the electrical panel — is it labeled? Any signs of issues?
• ✅ Walk the exterior and look at grading and drainage
• ✅ Go in the attic and basement (or have the inspector walk you through findings)
• ✅ Ask about any specialty inspections that may be warranted
• ✅ Read the full report before your inspection contingency deadline
• ✅ Get contractor estimates for significant findings before negotiating

The home inspection is your last real chance to look under the hood before you own the house. Take it seriously, hire someone good, and show up. You'll make better decisions when you've seen the issues yourself — not just read about them in a report.